red line Men's 50021-BB-01 Tech Black Dial Black Silicone Watch Japanese quartz movement Mineral crystal; polished black ion-plated stainless steel case; black silicone strap 60 second and 12 hour subdials; date function Black dial with silver tone hands and hour markers; luminous; alarm function; black stainless steel crown with red accent Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving